GENTRANS 50 Lecture Notes - Lecture 1: Coordination Geometry, Coordination Sphere, Double Salt

• School: Bloomsburg University
• Department: General Transfer
• Course: GENTRANS 50

Document Summary

Chapter-09: co-ordination compounds: co-ordination compounds, a coordination compound contains a central metal atom or ion surrounded by number of oppositely charged ions or neutral molecules. The charge on the complex ion is equal to the algebraic sum of the charges on all the ligands coordinated to the central metal ion: denticity: Ethylenediaminetetraacetate ion (edta4 ) is an important hexadentate ligand. [cu(nh2ch2nh2)2]2+: ambidentate ligand, ligands which can ligate (link) through two different atoms present in it are called ambidentate ligand, example: no2-and scn-. Metal shows two different kinds of valencies: primary valence and secondary valence. The linkages to the metal have characteristic spatial arrangements corresponding to different coordination numbers. The most common geometrical shapes in coordination compounds are octahedral, square planar and tetrahedral. It is equal to oxidation state of central metal ion. Secondary valence: this valence is non ionisable, the secondary valency equals the number of ligand atoms coordinated to the metal.